This Ecma Standard specifies the physical and magnetic characteristics
of a 12,7 mm wide, 128-track magnetic tape cartridge, to enable
physical interchangeability of such cartridges between drives.
It also specifies the quality of the recorded signals, a format
- called Digital Linear Tape 3 Extended (DLT 3-XT) - and a recording
method, thereby allowing data interchange between drives. Together
with a labelling standard, for instance Standard ECMA-13
for Magnetic Tape Labelling, it allows full data interchange by
means of such magnetic tape cartridges.